Steering Gear

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Check the steering gear housing for looseness, damage, and oil leakage as shown below.
Check the steering column connections for looseness.

Fig 1: Checking Steering Column Leakage And Connections Looseness
Courtesy of NISSAN NORTH AMERICA, INC.